code: def test_should_return_correct_class_for_string(self):
      vl = str_to_class("evadb.readers.decord_reader.DecordReader")
      self.assertEqual(vl, DecordReader)
  
file_path: evadb/test/integration_tests/short/test_generic_utils.py
imports: import unittest
  from pathlib import Path
  from test.markers import windows_skip_marker
  from evadb.configuration.constants import EvaDB_DATASET_DIR
  from evadb.readers.decord_reader import DecordReader
  from evadb.utils.generic_utils import generate_file_path, is_gpu_available, load_function_class_from_file, str_to_class, validate_kwargs
label_desc: Use image node_id 2 for calling the ModulePathTest obj's underlying member method code with example usage: obj.test_should_return_correct_class_for_string() without return types